标准摘要
[中文适用范围]： 本文件为平板膨胀计测试的设备要求、执行和报告制定了指南。 注：本文件满足根据 EN 1997-1 和 EN 1997-2 作为岩土调查和测试一部分的平面膨胀计测试的要求。 基本的平板膨胀计测试包括将一个刀片形钢探头垂直插入土壤，该探头的一个面上装有薄的可膨胀圆形钢膜，并确定选定深度间隔的两个压力：当膜与刀片齐平，随后，当膜的中心位移达到 1.10 mm 时施加压力。 平板膨胀仪试验结果主要用于获取土壤地层、原位应力状态、变形特性和抗剪强度等信息。 它还用于检测粘土中的滑动面。 平板膨胀计测试最适用于粘土、淤泥和沙子，这些物质的颗粒与膜的尺寸相比较小。 [外文原描述]： ISO 22476-11:2017 establishes guidelines for the equipment requirements, execution of and reporting on flat dilatometer tests. NOTE This document fulfils the requirements for flat dilatometer tests as part of the geotechnical investigation and testing according to EN 1997‑1 and EN 1997‑2. The basic flat dilatometer test consists of inserting vertically into the soil a blade-shaped steel probe with a thin expandable circular steel membrane mounted flush on one face and determining two pressures at selected depth intervals: the contact pressure exerted by the soil against the membrane when the membrane is flush with the blade and, subsequently, the pressure exerted when the central displacement of the membrane reaches 1,10 mm. Results of flat dilatometer tests are used mostly to obtain information on soil stratigraphy, in situ state of stress, deformation properties and shear strength. It is also used to detect slip surfaces in clays. The flat dilatometer test is most applicable to clays, silts and sands, where particles are small compared to the size of the membrane.
英文名称Geotechnical investigation and testing — Field testing — Part 11: Flat dilatometer test